843 citations · 3.6k across the 103 of their papers we have counts for
13 papers · 1 filter
Information vs. Disturbance in Dimension D
P. Oscar Boykin, Vwani P. Roychowdhury
We show that for Eve to get information in one basis about a state, she must cause errors in all bases that are mutually unbiased to that basis. Our result holds in any dimension.…
Bell-Correlated Activable Bound Entanglement in Multiqubit Systems
Somshubhro Bandyopadhyay, Indrani Chattopadhyay, Vwani P. Roychowdhury +1
We show that the Hilbert space of even number () of qubits can always be decomposed as a direct sum of four orthogonal subspaces such that the normalized projectors onto the…
Threshold Error Penalty for Fault Tolerant Computation with Nearest Neighbour Communication
T. Szkopek, P. O. Boykin, H. Fan +5
The error threshold for fault tolerant quantum computation with concatenated encoding of qubits is penalized by internal communication overhead. Many quantum computation proposals…
Balanced Overlay Networks (BON): Decentralized Load Balancing via Self-Organized Random Networks
Jesse S. A. Bridgewater, P. Oscar Boykin, Vwani P. Roychowdhury
We present a novel framework, called balanced overlay networks (BON), that provides scalable, decentralized load balancing for distributed computing using large-scale pools of hete…
Optimal two-qubit quantum circuits using exchange interactions
Heng Fan, Vwani Roychowdhury, Thomas Szkopek
The Heisenberg exchange interaction is a natural method to implement non-local (i.e., multi-qubit) quantum gates in quantum information processing. We consider quantum circuits com…
A Statistical Mechanical Load Balancer for the Web
Jesse S. A. Bridgewater, P. Oscar Boykin, Vwani P. Roychowdhury
The maximum entropy principle from statistical mechanics states that a closed system attains an equilibrium distribution that maximizes its entropy. We first show that for graphs w…